How do asset managers with long life assets (40 years plus) decide to replace mature technology with new innovative technology? How do they assess the risks and rewards? A case study.

Author(s):  
A.R. Hill
2022 ◽  
Vol 14 (1) ◽  
pp. 581
Author(s):  
Rodrigo Rodriguez Delgadillo ◽  
Khaled Medini ◽  
Thorsten Wuest

Additive manufacturing as a key Industry 4.0 technology brings radical changes to how we execute production and services operations. However, this innovative technology has not reached maturity and research and development are still in progress to unleash its full sustainability potential. This paper aims to provide operational guidance to decision makers to jointly improve quality and sustainability performance of additive manufacturing processes. We propose a framework based on the DMAIC (Define/Measure/Analyze/Improve/Control) methodology and comprehensive pool of targeted key performance indicators (KPIs) and illustrate this framework through a single case study. The paper evidences the feasibility of extending DMAIC to the growing additive manufacturing domain to achieve quality and sustainability objectives. The case study uncovered some challenges, e.g., the need for customization to a company/industry context, which must be addressed in order to widely apply the proposed framework successfully.


2018 ◽  
pp. 123-144
Author(s):  
Florent Audy

In this chapter, the social, symbolic, and cultural attributes of Viking Age silver is addressed through an exploration of coin-pendants: coins taken out of circulation and suspended on necklaces to be worn as jewellery. Surveying material from a newly collated dataset, the chapter first outlines the key features of coin-pendants from across Scandinavia, including the rate of transformation of different coin types and their technical features. It then addresses the question: what made coin-pendants desirable? Discussion considers the aesthetic and bullion content of the pendants, as well as their value as exotic items and/or as items with long life histories. A case study is presented of an Arabic dirham-pendant, found in an inhumation grave at Birka, Sweden.


Author(s):  
Hendrik Jacobus Haasbroek ◽  
Geoff Bick ◽  
Stephanie Giamporcaro

Subject area of the teaching case: The case can be used in the subject areas of finance and in particular investments, corporate governance, ESG, or responsible investments. It is suitable for students from all financial backgrounds, from a novice in the financial markets to an expert in finance. It is, however, expected that the class should have a sound fundamental grounding in financial analysis and valuations. The purpose of this case is to prepare students for future investments they would make in whatever capacity – whether in private or listed companies – and to prepare them for future roles on boards of directors. The examples of real-life events in this case study are used to prepare students for future similar situations in which they might find themselves. Student level: This teaching case is aimed at postgraduate students pursuing an MBA or a specialist Masters in a finance programme. This case can be used as a master class in corporate governance, investments, or responsible investments. This case is also suited for an executive education class in management. It is particularly relevant to a module that focusses on investments, corporate governance, ESG, or responsible investments. Brief overview of the teaching case: The case study chronicles meetings held on 8 November 2017 at a fictional South African asset manager, Active Investment Management (AIM). These meetings discuss the firm's investment in JSE-listed Steinhoff International Holdings. The case deals with the questions that active fund managers need to address when balancing financial analysis; environmental, social, and governance (ESG) analysis; portfolio management; and the need to comply with their fiduciary duty to clients. It also looks at the need for responsible investing in decision-making. Expected learning outcomes: The understanding of the assessment around the complexities of asset management when it comes to responsible investment. To determine why institutional investors should apply responsible investment principles when making investment decisions. An understanding of the evaluation of the unique roles of the three pillars of corporate governance, namely asset managers, auditors, and the board of directors. The ability to assess how to integrate financial analysis and ESG principles in making investment recommendations.


Author(s):  
Tao Zhao ◽  
Dan Lee ◽  
Neil Willis ◽  
Hui Qiu ◽  
Marco Puliafito

“Vertical type” spool configuration is commonly adopted as riser base spool for deepwater field development. With increasing water depths and risers subject to harsher environments, the excessive lower riser assembly motions and slugging induced fatigue damage have emerged as the governing design criteria for deepwater riser base spool design. Conventional vertical spool has inherent shortcomings to handle such design conditions. A new “hybrid” concept is therefore proposed, which extends beyond the “traditional” spool concept by integrating both vertical and horizontal spools into a 3D configuration. It inherits the vertical spool’s strength on handling large spatial expansion and utilise the pipe-soil interaction to dampen the potential resonance caused by slug flow. Several prototypes have been examined and the hybrid spool expansion-mechanism is discussed together with an optimisation procedure proposed. An advanced FEA technique using both Abaqus/Flexcom has been employed as part of the hybrid spool development, which consists of rigorous 3D dynamic analysis, bespoke non-linear soil interaction model and utilising the global riser dynamic behaviour. An in-house spool automation tool is developed to optimise the iterative analyses required to obtain a satisfactory hybrid spool configuration. This paper described a successful case study in recent deepwater hybrid riser bundle (multibore hybrid riser) tower development project, where the need to accommodate large lower riser assembly motion and slugging fatigue damage are the two main design drivers. This presentation provides a creative insight into this innovative technology.


Author(s):  
Alex Berry ◽  
Warren Brown ◽  
Antonio Seijas ◽  
Sarah Cook

Abstract Coke drums are subjected to severe thermal cycling with the skirt to shell connection weld being vulnerable to fatigue cracking. It is essential this connection is well designed to ensure a long life before repairs are inevitably required. Much has been written on coke drum skirt design with the aim of reducing the thermal stresses and strains encountered at the skirt connection weld, some designs have removed the weld completely allowing the drum to sit in an “egg-in-cup” arrangement. This paper includes a short literature review discussing Coke drum skirt designs and explains skirt behaviour during the drum cycle that results in eventual skirt cracking. A case study is reviewed in detail for a new pair of coke drums, where the predicted fatigue life of the chosen welded connection is assessed using axisymmetric, quarter symmetry and half symmetry finite element analysis supported by thermocouple data. The optimised design focuses on a conventional tangential design where the effects of the essential variables such as skirt thickness, skirt connection location, skirt-to head-gap and slot design (length, location & spacing) have been modelled and optimised to obtain a skirt design that produces the longest fatigue life for the intended duty cycle. Coke drum skirts must be installed onto the shell to exacting tolerances during manufacture to ensure concentricity and minimal gap between the skirt and shell. A brief overview of how this is achieved will be presented.


2013 ◽  
Vol 479-480 ◽  
pp. 1023-1026 ◽  
Author(s):  
Shang Liang Chen ◽  
Hsuan Pei Wang ◽  
Yun Yao Chen ◽  
Chiang Hsu

This study proposes an innovative technology of Virtual COM Port Driver applied to the SaaS cloud manufacturing system, so that user can only via a web browser to complete all operations of system. Flexibility of the system extensions, and support manufacturing enterprise use other communications equipment at work, for example RFID products, GPS receiver. Information integration, solve each computer to be fitted Middleware to read native components and retrieve information for the inconvenience. This study proposes five-layer model of cloud manufacturing system, and through the virtualization web server to achieve cloud infrastructure layer. In particular, the Virtual Com Port Driver is deployed in the cloud infrastructure layer and middleware layer, and the signal device layer can communicate directly to the cloud infrastructure layer via the web browser. Through a case study, to implement the Virtual COM Port Driver technology to verify the cloud server can capture the local COM port successfully only via the web browser and integrate the information further.


2020 ◽  
Vol 31 (2) ◽  
pp. 1
Author(s):  
HADIL JALIL ALSHOUHANI

A comparative study between Short Life Cut Off Low (SL-COL) extended for one day, and Long Life Cut Off Low (LL-COL) extended for ten days associated with successive rain storms over Iraq on 21 to 30 April, 2018. The study tracking the evolution stages of both COLs in different pressure surfaces at troposphere layer, and found that there are many dynamical processes effect on prolong the life of COL. These processes exchanged their roles between different pressure levels. In both cases the high potential vorticity (PV) anomaly at 315ᵒ K isentropic surface is responsible on the emergence COLs, and the convection processes at lower troposphere and latent heat at upper troposphere are responsible on COLs dissipation. The main reasons of long-life COL can be summaries as a high-pressure system below COL at the surface which preventing the convection process, the formation of Omega block that promoting the COL system and preventing its dissipation rapidly in spite of the intense convection processes due to tropical moist system at the surface.


Author(s):  
Varun J. Prabhakar ◽  
Hannah Allison ◽  
Peter Sandborn ◽  
Bo Eriksson

Long life cycle products, commonly found in aviation, medical and critical infrastructure applications, are often fielded and supported for long periods of time (20 years or more). The manufacture and support of long life cycle products rely on the availability of suitable parts, which over long periods of time, leaves the parts susceptible to supply chain disruptions such as suppliers exiting the market, allocation issues, counterfeit part risks, and part obsolescence. Proactive mitigation strategies exist that can reduce the impact of supply chain disruptions. One solution to mitigating the supply chain risk is the strategic formulation of part sourcing strategies (optimally selecting one or more suppliers from which to purchase parts over the life of the part’s use within a product or organization). Strategic sourcing offers a way of avoiding the risk of part unavailability (and its associated penalties), but at the expense of qualification and support costs for multiple suppliers. An alternative disruption mitigation strategy is hoarding. Hoarding involves stocking enough parts in inventory to satisfy the forecasted part demand (for both manufacturing and maintenance requirements) of a fixed future time period. This excess inventory provides a buffer that reduces the effect of supply chain disruptions on the part total cost of ownership (TCO), but increases the total holding cost. This paper presents a method of performing tradeoff analyses and identifying the optimal combination of second sourcing and hoarding for a specific part and product scenario. A case study was performed to examine the effects of hoarding on both single and second sourced parts. The case study results show that hoarding can contribute to a decrease in the cumulative TCO and a decrease in its variance.


2019 ◽  
Vol 124 ◽  
pp. 02014
Author(s):  
T. Neier ◽  
J. Knauel ◽  
M. Bawart ◽  
D. Antipov ◽  
S. Kim

This study handles one of the key questions of network operators: How can the remaining life time of underground power cables be estimated? The answer to this question is explained by a new method of KEPCO Korea. When combining VLF Tan Delta (TD) and Partial Discharge (PD) diagnostic it is possible to identify and localize weak individual spots along a cable. After weak spots are cleared, the general aging condition of the cable can be evaluated and the Remaining Life Time can be estimated. The implementation of this approach in the KEPCO Distribution Networks is illustrated in a practical case study. A new tool for asset managers is available and it is expected that it will help to further develop the preventive maintenance approach by power utilities all around the world.


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